Keywords: Nerves, NeurographyMultifocal chronic inflammatory demyelinating polyneuropathy (CIDP) is characterized by asymmetrical and irregular nerve thickening. However, the nerves are sometimes irregular in caliber even without obvious neuropathy. MIXTURE can simultaneously acquire neurography and T2 mapping. The diameter and T2 values from MIXTURE were significantly wider and higher in multifocal CIDP than in cases with normal but irregular caliber (P = 0.029 and 0.004). The AUCs of ROC analyses were 0.889 and 0.972 in diameter and T2 values for differentiating the two groups. Diameter and T2 values acquired with MIXTURE help differentiate whether caliber irregularities in the brachial plexus are pathological.
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